1946 17 Dec. 5/7 When they turn off the radio-thrillers in prep.-time, their children regard them as insensate and tyrannic giants.
1961 E. S. Turner vii. 28 At prep time, they were not allowed to use ink, for fear of damaging the art treasures on the walls.
1991 Sept. 75/2 I came on the movie just four days before the cameras rolled, which meant I had virtually no prep time.